Gasoline filter for internal-combustion engines



Patented Dec. 18, 1923;

CHARLES QF NEW YORK, N.

GASOLINE FILTER yroe INTERNAL-couramment ENGINES.

l Application filed March 25, 1922. Serial No. 546,555.

ToY/ ion-din #i may nevica/inf.' Be itkimwn thatffl, CHARLES' L. Lair MXN, a citien lof the .United-States, and` a resident of NewYorky city, inthe county of New"York and AState of New York, have 'invented certain new and useful Improvementsl in Gasoline Filters for Internal- Combu'stion Engines, of which the following isa specification@ c This. invention relatcsto a lter for gasoline and is intended mainly for use on the intake vpipe betweenithe gasoline tank and the carburetor ot internal combustionengines with the object of filtering solid matter from the gasoline and assisting somewhat in vaporizing the same. This invention resides more particularly in a ty )c of filter which has a glasslenclosed cham er for the filtered material whereby the state of the filter may be inspected at any time while it is in use. A further object is to provide a ready means for cleaning out the filter without in any way disconnecting it or reu'ioving it from service. Other objects reside in the arrangement of parts and the details of (onstruction which provide a comparatively inexpensive device, readily adaptable to varying conditions of service andv constructed of parts that may be easily replaced. These and other objects of the invention ywill be understood from the following specification and the accompanying drawings in which Fig. l is a cross-sectional elevation of my filter device complete, Fig. 2 is an elevation of' the device itself', Fig. y3 shows one arrangement which may be used in applying this device to the intake of an internal combustion engine and Fig. L1 showsI an alterna'- tive construction to Fig. 1, made Jfrom plain iron pipe.

It is well-known that impurities and foreign matters accumulate in gasoline tanks i from time to time and the suction or forced feed by which the gasoline is delivered to V the carburetor carries over a certainamount of this foreign matter which, if not removed, tends to carbonize the cylinder `and otherwise reduce the efficiency of the engine. The presentinvention is intended for ap plication on the pipe leading from the gasoline tank to the carburetor and acts as an efficient filter for the gasoline, at the same time providing a means of inspection which not only shows the sediment filtered from the gasoline itself but serves as an indicator of the suction thatis being applied to force the gasoline to the carburetor.

Certain novel features have been adopted in constructing this device, including an arrailgenicnt wht-li only slightly changes the elevation ot' the gasoline feed pipe as the intake and discharge are both connected at the top ot' the device. The base ol the device is arranged with a metallic casing having a number of windows behind which a glass ring is placed, forming a chamber into which the filtered sediment deposits, thereby providing a ready means of inspection when the apparatus is in use. A pet cock is provided in the base of this chamber which may be used to drain ofi' the sediment and which can bottom plate 13 and on the gasket 18, en-

gaging an annular internal ridge on the casting 11. By tighteningr up the bottom plate 13 it is possible to tighten up the gaskets and thereby render the glass-enclosed chamber air-tight. It should here be noted that the gasket- 18 fits into a hollow, annular groove las indicated by 19, also the gasket 17 fits into a groove formed in the plate 13. This prevents the gaskets from spreading inwardly and holds them in position against the pressure applied on the ends of the glass tube 16. Y

A filter consisting of a gauze cone 21, is supported by the ring 20, resting on the topof lan internal projection on the casting. On top of the ring 2O the gasket 22 is placed and the top plate l2 is screwed down on top Vof gasket 22, thereby vprovidinga seal for the entire easingand it will be noted that the passage through the device is from the orifice 14C into chamber a, through the walls of cone-shaped filter 21, into the interior and through the discharge connected at 26.

The solid matter will naturally be Jforced against the walls of the cone and by gravity will gradually settle in the bottom ofthe dein filters of various classes and which can top cap is removed readily be seen through the Windows 15, the willen the filter cone can easily be taken out for inspection'and cleaned. However, under ordinary conditions it will be possible todischarge most ofthe caking on the filter cone 'by forcing gasoline through the device 'in the opposite direction.

One application off this invention as shown in Fig. 3 consists of a gasoline tank 31 connected by pipe 33 with the filter' 32 and'from the filter 32 by pipe 34 to the carburetor 35. Pet-cock 36, as shown at the bottom, may be'used for cleaning out the filter chamber as previously mentioned.

The construction shown in F ig. 4 is intended fora purpose similar to Fig. 1, with the exception that in this construction; a piece of seamless ltubing 41 is substituted for the casting l1. In this case the end caps 42 and 43v are screwed down by exterior threads `on the tubei 41 and the interior ledge in the tube is provided by the ring 45 screwed into position as shown and against Which the gasket bearing on the end of the glass tube 16, rests. The intake in this case is attached to an orilic'e"44 which may be spot-Welded or brazed tothe side of the tube. The filter in this case is somewhat cylindrical in shape as indicated at 48 and is supported by the ring 2O between the gaskets 22 and 47 and sealed by screwing down the. cap 42. This makes a light construction and for large product-ion enables most of theparts to be produced on a screwing machine. It will be noted that the bottom ange of the ring is expanded` at 46 to form a better seating for the gasket 18.

Other types of construction may be used; for instance, the top and bottom parts may be independent castings with a screw joint just below the intake orifice, the top part beingscrewed down on the gasket 18 on top of the glass ring 16.

Having thus described my invention, I

2. In a filter of the class described, the

`combination of a filter chamber consisting of a piece of perforated pipe, a ring threaded into said pipe, the edge of said ring 4fianged to form a ledge, a glass cylinder abutting on said'ledge and forming a portion of said chamber, an end cap for holding said cylinderin place, a conical filter member extending into said chamber and a chp for clamping said member against said ring.

3. yIn a filter of the class described, the combination of a filter chamber consisting of a piece of perforated pipe, a ring threaded into said pipe to form a ledge', a glass cylinder abutting on said ledge and forming a. portion of said chamber, an end cap for holding said cylinder in place, a conical lter member extending into said chamber and havinga base fiange, a cap for clamping said flange against said ring, an inlet for said'chamber opposite said ring and an outlet connecting With the interior of. said filter member. i

Signed at New York, in the county of New York and Sta-te of New York, this fourteenth day of March, A. D. 1922-.

, CHARLES L. LEHMANN. 

